The reason Facebook is so politicised and stuff like this comes up is because it hosts user-generated content, and has explicitly chosen to decide what it deems allowable beyond actual law. That makes it nearly impossible to keep the politics out of it.

In contrast, something like a machine shop (random example) won't be politicised much if at all, because the work doesn't revolve around making political decisions.

Have you worked at a machine shop?

During machine down time I've heard some of the most radical Stalinist politics coming from people who you would think are only interested in football and beer while trying to fix the lathe for an order that's due in 3 hours. By the same token I've heard some of the most extreme fascist views too.

I have no doubt that political conversations do come up, but they don't really factor into the actual work that takes place --- probably because, as someone who lead me through one warned, "the machines don't care who you are or what you think. Get yourself in the wrong place and they'll eat you alive."

I suspect the problem is that people spend so much time at work they no longer have meaningful social lives outside of work.